So many ways to get a link indexed. If you want immediate, and has a budget for that, then go for an instant link indexing service - it can get a link indexed within 8-24 hours time.
Or you can try using a link indexing software - similar result - within 8-48 hours time and your link will be indexed.
But personally, I recommend building contextual links to your link, and this method last longer as your post will stick longer on the search engine instead through the backlink and you will have additional link juice flowing to your site.